Damper-regulator.



Patented 4 Feb.` I3,4 I90l.

. .1.5. lsnmflf.V DAMPER REGULATOR.

(Application med Mar. 12, 1900.)

(Nolldndel.)

1' NoRms Evans co.. PHaTaUTH Ntra raras armar trims.

JOI-IN B. BISHOFF, OF CLAIREVIEVV, MICHIGAN.

DAM PER-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 668,156, dated February 19, 190i.. Application led March 12,1900. berial No. 8,368. lNo model-l Zb ctZ whom t ntcty concern..-

Be it known that I, JOHN B. BISHOFF, a citizen of theUnited States, residing at Claireview, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Damper-Regulators, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to a steam damperregulator; and it consists, essentially, in the peculiar formation of the valve mechanism therefor and the novel construction of the connecting device intermediate the valve and the means for holding the latter normally to its seat.

The invention further consists in the peculiarconstruction, arrangement, and combination of the various parts of the regulator, as will be hereinafter described, and shown in the drawings, in which- Figure lis a vertical central section through the damper-regulator, partly in elevation. Fig. 2 is a section taken on line a; x, Fig. l; and Fig. 3 is a diagrammatic view illustrating the manner of attachment between the regulator and the damper to be operated.

In the drawings thus briey described the reference-letter A designates the cylinder, having a steam-outlet port B of small size formed therein near its upper end, in which is arranged a stop-cock C, as shown.

E is a bushing having a threaded engagement with the top of the cylinder.

H is a valve-casing provided with the solid portion F, through which a multiple of ports G extend'. The casing is fitted within the bushing, as shown, and is provided in addition to the ports F with a steam-inlet port I and the valveguide J.

K designates the valve mounted upon the guide and provided with a winged guide-bar L, extending within the guide J. A cap M closes the upper end of the valve-casing and terminates in an apertu red threaded nipple C.

P designates the Valve-stein, comprising in its construction two sections or members consisting of an outer hollow member Q, arranged within the threaded nipple, as shown, and having its lower end closed and resting within a socket S formed within the valve, and a complementary member in the form of an inner stem T. This is of considerably less diameter than the bore of the outer member and is arranged within the latter, as shown, the free end extending beyond the member Q at some little distance.

R designates a bracket, one arm U of which is apertured and threaded to engage the nipple O and is secured to the latter' by a nut O', and V designates a lever pivoled to the complementary arm W of the bracket and bearing normally against the stem T, as indicated. This lever is held normally against the stem in any suitable manner, preferably by means of a weight X.

It will be obvious from the construction of the connection between the valve-stem and the lever V that any binding of the stem within its guide due to the action of the lever 'turning on its pivot will be entirely eliminated, as the stem proper is capable of a rocking movement within the outer member Q, permitting said latter member to move vertically within the nipple without binding.

4The lower end of the valvecasing is closed by a cap A', which terminates in an apertured threaded nipple B', adapted to be fitted within an opening C', formed in a suitable bracket-arm D'. The latter constitutes a support for the damper-regulator.

l' is the cylinder-piston, preferably cupshaped in contigui-ation and provided with a series of grooves F' upon its exterior, forming a water-packing. At its lower end the piston is provided with an elongated socketpiece G', which is adapted to receive one end of the piston-rod H', as shown.

In practice the threaded nipple B of the cap is not always in perfect alinement with the cylinder and causes a slight binding of the piston Within the cylinder during the operation of the mechanism. To obviate this, I reduce the size of the upper end of the piston-rod, so that it will be of considerably less diameter than that of the socket, and pivot said end within the socket by a pin I', so that the rod will have a rocking connection with the piston. Compensation is thus made for any irregularities in the construction of the parts.

The lower end of the rod just described is provided with a yoke J', to the ends of which are attached chains K', connected in turn and IOO in a similar manner to the yoke L', arranged above the cylinder, as plainly shown in Fig. 3. M. designates the damper to be operated,

which may be of any approved type and which is provided with an operating-arm O', carrying a weight P', the arm being connected to the yoke L', preferably by means of a chain Q'.

The parts having been thus described, the operation of the mechanism is as follows: Steam enteriilg the valve-casing through a suitable supply-pipe R' forces the valve K from its seat when the pressure is greater than necessary and passes through ports S' (shown in dotted lines in the lower end of the valve-casing) and through the portion F into the cylinder. Here it acts upon the piston and turns the damper from its normal position, as shown in Fig. 3, into the position indicated inA dotted lines in said ligure. When the pressure is again normal, the valve K is reseated, and the weight upon the damper forces the piston back to its initial position, the steam within the cylinder exhausting through the small discharge-port B, which is always open. The condensation passes out from the cylinder through the port T' at the lower end thereof, the port being preferably provided with a drip-cock U', which is normally open.

What I claim as my invention is- In a damper-regulator, the combination with a cylinder, of a bushing having a threaded engagement with the cylinder-top, a valvecasing provided with a solid portion fitting within the bushing, a valve-guide within the casing, a valve supported upon and having a winged bar extending within the guide, the valve-top being recessed, a tubular member having one end closed and resting within the recess in the valve and the opposite endprojecting through the valve-casing top, a stem loosely arranged within and extending beyond the tubular member, and a weighted lever bearing constantly against the stem, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN- B. BISHOFF.

Witnesses: L. J. WHITTEMORE, M. B. ODOGHERTY. 

